CN118478004A - Metal shell injection molding device - Google Patents

Abstract

The invention discloses an injection molding device for a metal shell, which belongs to the technical field of injection molding, wherein an injection molding machine is used for injecting injection molding melt from a pouring hole in a pouring seat, the injection molding machine is used for extruding a plurality of connecting plates to drive guide rods and isolation seats to move downwards and separate from the bottom end of the pouring seat, the melt enters a mold cavity, after the pouring work is finished, the injection molding machine is separated from the connecting plates, a pressing plate is supported by the elasticity of a spring, the pressing plate drives the isolation seats to move upwards through the two guide rods, the end parts of the isolation seats can be embedded into the pouring hole, the purpose of plugging the pouring hole is realized, the top part in the mold cavity is flush with the bottom of the isolation seats and is positioned on the same plane, the melt in the mold cavity can be automatically separated from the melt in the pouring hole in a breaking way, and the surface of an injection molding piece at a breaking part is ensured to be even, so that the surface of the injection molding piece can not generate pouring gate residues, and the following repeated repairing treatment is not needed, and the high-efficiency and stable production work of the metal shell is facilitated.

Description

Metal shell injection molding device

Technical Field

The invention relates to the technical field of injection molding, in particular to a metal shell injection molding device.

Background Art

In the intelligent manufacturing equipment industry, metal shell injection molding is to mix powdered metal with thermoplastic binder material and then manufacture the metal shell through injection molding process.

At present, after the injection molding melt is injected into the mold cavity through the gate sleeve, the mold and the metal substrate are cooled by the cooling water introduced into the cooling water channel, and the cooling water gradually rises from bottom to top along the side wall of the mold. The plastic melt at the bottom is cooled and formed first, and the plastic melt at the top needs to wait for the cooling water to rise before it can be cooled, which is easy to affect the product quality due to uneven cooling; secondly, by reducing the diameter of the gate in the injection mold, the injection molding material in the gate can automatically break and separate from the injection molded part when the injection mold is opened, but after the break and separation, the surface of the injection molded part at the fracture is uneven, and the surface of the injection molded part is prone to gate residues, and multiple treatments are required, which is not conducive to the efficient and stable production of metal shells.

Summary of the invention

The object of the present invention is to provide a metal shell injection molding device to solve the problem that uneven cooling of the mold and the metal substrate affects the product quality proposed in the above background technology; secondly, by reducing the diameter of the gate in the injection mold, the injection material in the gate can be automatically separated from the injection molded part when the injection mold is opened, but after the separation, the surface of the injection molded part at the fracture is uneven, and the surface of the injection molded part is prone to gate residue, which requires multiple treatments.

The purpose of the present invention is that the end of the isolation seat can be embedded in the pouring hole to achieve the purpose of blocking the pouring hole, and the top of the mold cavity is flush with the bottom of the isolation seat and is in the same plane, so that the melt in the mold cavity can be automatically separated from the melt in the pouring hole by fracture, ensuring that the surface of the injection molded part at the fracture is smooth, so that no gate residue will be generated on the surface of the injection molded part, and no subsequent multiple repair treatments are required, which is conducive to the efficient and stable production of metal shells.

Through multiple nozzles spraying to the fixed mold base and the movable mold base in a large range, both sides of the fixed mold base and the movable mold base can be cooled and cooled simultaneously, so that the fixed mold base and the movable mold base are cooled evenly, and the cooling water contacts with the heat sink, the fixed mold base and the movable mold base to improve the cooling effect. Because the heat exhaust fan is tilted toward the fixed mold base and the movable mold base, the wind blowing to the heat sink, the fixed mold base and the movable mold base can quickly take away the heat, and the hot air is discharged from the exhaust holes on both sides of the cooling box, which can greatly improve the heat dissipation effect of the fixed mold base and the movable mold base, so that the metal shell in the fixed mold base and the movable mold base can be quickly formed.

To achieve the above object, the present invention provides the following technical solutions:

A metal shell injection molding device, comprising a cooling box, a fixed mold seat is arranged in the cooling box, a movable mold seat is installed on the fixed mold seat, a support assembly is arranged at the bottom of the fixed mold seat, the support assembly is arranged in the cooling box, a mold cavity is arranged at the bottom of the movable mold seat, an injection molding assembly is installed at the center of the mold cavity corresponding to the movable mold seat, an extrusion assembly is arranged in the injection molding assembly, a plugging assembly is fixedly connected to the bottom of the extrusion assembly, the plugging assembly is located at the bottom end of the injection molding assembly, and limiting grooves are respectively arranged on both sides of the top of the movable mold seat;

The end of the extrusion assembly is slidably connected in the limiting groove, a water tank is installed at the bottom of the cooling box, the bottom end of the support assembly passes through the cooling box and is fixed to the bottom of the water tank, an opening is provided at the top of the water tank, a water outlet is provided at the bottom of the cooling box, the water outlet is communicated with the opening, a water storage chamber is provided in the water tank, a spray assembly is installed in the water storage chamber, both ends of the spray assembly pass through the water tank and are installed on both sides of the cooling box, a heat exhaust assembly is installed above the inner wall of the cooling box, mounting holes are respectively provided on both sides of the cooling box, and the top of the spray assembly is installed in the mounting hole.

As a further solution of the present invention, the support assembly includes a slide seat, which is slidably connected in the cooling box, the top of the slide seat is connected to the fixed mold seat, and multi-stage electric hydraulic rods are fixed at the four corners of the bottom of the slide seat, and the bottom end of the multi-stage electric hydraulic rod is fixed to the bottom of the water tank. The slide seat is provided with a perforation and a plurality of drainage holes.

As a further solution of the present invention, the injection molding assembly includes a pouring seat, the pouring seat is externally clamped with a chuck, the chuck is provided with three bolts, and the chuck is mounted on the movable mold seat by the bolts.

As a further solution of the present invention, a pouring hole is opened in the middle of the pouring seat, a slideway and two sliding holes are arranged outside the pouring hole, the slideway is annular in design, and the blocking assembly is slidably connected in the two sliding holes.

As a further solution of the present invention, the extrusion assembly includes a pressing plate, three connecting plates are fixed on the pressing plate, a sliding rod is fixed to the bottom of the connecting plate, the sliding rod is slidably connected in the limiting groove, a connecting cylinder is clamped in the middle of the pressing plate, four springs are fixed to the bottom of the pressing plate, and the bottom ends of the four springs are fixed to the injection molding assembly.

As a further solution of the present invention, the blocking assembly includes an isolation seat, the top of the isolation seat is an inverted cone design, the bottom of the isolation seat is provided with an arc groove, the top of the isolation seat overlaps the bottom end of the injection molding assembly, and the two sides of the top of the isolation seat are respectively fixedly connected with guide rods, and the top ends of the two guide rods pass through the injection molding assembly and are fixed to the bottom of the extrusion assembly.

As a further solution of the present invention, the spray assembly includes a cooling circulation pump, which is installed in a water storage chamber. The two water outlet ends of the cooling circulation pump are respectively connected to water pipes, and the other end of the water pipe passes through the water tank and is connected to a nozzle. The nozzle is clamped in the mounting hole, and a plurality of nozzles are provided on one side of the nozzle close to the fixed mold base and the movable mold base.

As a further solution of the present invention, the heat exhaust assembly includes a support frame, a through hole is opened in the middle of the support frame, three heat exhaust fans are respectively installed on both sides of the top of the support frame, and the heat exhaust fans are inclined toward the fixed mold base and the movable mold base.

As a further solution of the present invention, a plurality of exhaust holes are provided below the mounting hole, the exhaust holes are opened on one side of the cooling box, and a plurality of heat sinks are respectively installed on both sides of the fixed mold base and the movable mold base.

Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses an injection molding machine to pour the injection melt from the pouring hole in the pouring seat, and the injection molding machine squeezes a plurality of connecting plates, so that the connecting plates drive the two guide rods to move downward through the pressure plate, and the two guide rods drive the isolation seat to move downward and separate from the bottom end of the pouring seat, so that the mold cavity in the movable mold seat is connected with the pouring hole in the pouring seat, and the melt enters the mold cavity, so that the fixed mold seat and the movable mold seat can shape the melt, and after the pouring work is completed, the injection molding machine separates from the pouring hole and the plurality of connecting plates. The connecting plate supports the pressure plate through the elastic force of the spring, so that the pressure plate drives the isolation seat to move upward through the two guide rods, and the end of the isolation seat can be embedded in the casting hole to achieve the purpose of sealing the casting hole. The top of the mold cavity is flush with the bottom of the isolation seat and is in the same plane, so that the melt in the mold cavity can be automatically separated from the melt in the casting hole by fracture, ensuring that the surface of the injection molded part at the fracture is smooth, so that no gate residue will be generated on the surface of the injection molded part, and no subsequent multiple repair treatments are required, which is conducive to the efficient and stable production of metal shells.

2. After pouring the melt, the present invention controls the contraction of multiple multi-stage electric hydraulic rods, so that the rods drive the fixed mold seat and the movable mold seat to move downward through the slide seat, so that the fixed mold seat and the movable mold seat are transferred to the cooling box, and the cooling circulation pump is controlled to work. The cooling circulation pump draws water from the water storage chamber in the water tank, so that the cooling water enters the nozzle through two water pipes, and the water in the nozzle is sprayed to the fixed mold seat and the movable mold seat in a large range through multiple nozzles, so that both sides of the fixed mold seat and the movable mold seat can be cooled and cooled synchronously, so that the fixed mold seat and the movable mold seat are cooled evenly. Because the two sides of the fixed mold seat and the movable mold seat are respectively provided with multiple heat dissipation The heat in the fixed mold base and the movable mold base can be introduced into the heat sink to improve the heat dissipation effect of the fixed mold base and the movable mold base, and the cooling water is in contact with the heat sink, the fixed mold base and the movable mold base to further improve the cooling effect. In the process of spraying and cooling, the heat exhaust fan on the support frame is controlled to work. Since the heat exhaust fan is inclined toward the fixed mold base and the movable mold base, the wind blows toward the heat sink, the fixed mold base and the movable mold base to quickly take away the heat, and the hot air is discharged from the exhaust holes on both sides of the cooling box, which can greatly improve the heat dissipation effect on the fixed mold base and the movable mold base, so that the metal shell in the fixed mold base and the movable mold base can be quickly formed.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

FIG1 is a schematic diagram of a three-dimensional structure of the present invention;

FIG2 is a schematic structural diagram of a cross section of the present invention;

FIG3 is a schematic structural diagram of a water tank cross section of the present invention;

FIG4 is a schematic diagram of the structure of the movable mold base of the present invention when viewed from bottom up;

FIG5 is a schematic structural diagram of a cross section of a movable mold base of the present invention;

FIG6 is a schematic diagram of the structure of the connection between the injection molding component and the extrusion component of the present invention;

FIG7 is a schematic structural diagram of the connection between the extrusion assembly and the plugging assembly of the present invention;

FIG8 is a schematic structural diagram of an injection molding assembly of the present invention;

FIG. 9 is a schematic structural diagram of a cooling box of the present invention.

In the accompanying drawings, the components represented by each mark are listed as follows:

1. Cooling box; 2. Fixed mold seat; 3. Moving mold seat; 4. Support assembly; 401. Sliding seat; 402. Perforation; 403. Drain hole; 404. Multi-stage electric hydraulic rod; 5. Mold cavity; 6. Injection molding assembly; 601. Casting seat; 602. Chuck; 603. Bolt; 604. Casting hole; 605. Sliding hole; 606. Slideway; 7. Extrusion assembly; 701. Connecting plate; 702. Pressing plate; 703. Connecting cylinder; 704. Spring; 705. Sliding Rod; 8, limit groove; 9, plugging assembly; 901, isolation seat; 902, arc groove; 903, guide rod; 10, water tank; 11, opening; 12, water outlet; 13, spray assembly; 131, cooling circulation pump; 132, water guide pipe; 133, spray pipe; 134, nozzle; 14, water storage chamber; 15, heat dissipation assembly; 151, support frame; 152, through hole; 153, heat dissipation fan; 16, heat sink; 17, mounting hole; 18, exhaust hole.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Please refer to Figures 1 to 9, the present invention provides a technical solution:

A metal shell injection molding device comprises a cooling box 1, wherein a fixed mold base 2 is arranged in the cooling box 1, a movable mold base 3 is installed on the fixed mold base 2, a support assembly 4 is arranged at the bottom of the fixed mold base 2, the support assembly 4 is arranged in the cooling box 1, a mold cavity 5 is arranged at the bottom of the movable mold base 3, an injection molding assembly 6 is installed at the center of the movable mold base 3 corresponding to the mold cavity 5, an extrusion assembly 7 is arranged in the injection molding assembly 6, a plugging assembly 9 is fixedly connected to the bottom of the extrusion assembly 7, and the plugging assembly 9 is located at the bottom end of the injection molding assembly 6, and limiting grooves 8 are respectively arranged on both sides of the top of the movable mold base 3;

The end of the extrusion component 7 is slidably connected in the limit groove 8, a water tank 10 is installed at the bottom of the cooling box 1, the bottom end of the support component 4 passes through the cooling box 1 and is fixed at the bottom of the water tank 10, an opening 11 is provided at the top of the water tank 10, a water outlet 12 is provided at the bottom of the cooling box 1, the water outlet 12 is communicated with the opening 11, a water storage chamber 14 is provided in the water tank 10, a spray component 13 is installed in the water storage chamber 14, both ends of the spray component 13 pass through the water tank 10 and are installed on both sides of the cooling box 1, a heat exhaust component 15 is installed above the inner wall of the cooling box 1, mounting holes 17 are respectively provided on both sides of the cooling box 1, and the top of the spray component 13 is installed in the mounting hole 17.

During operation, the fixed mold base 2 and the movable mold base 3 are sprayed through the spray assembly 13, so that the fixed mold base 2 and the movable mold base 3 can be cooled synchronously to prevent uneven cooling from affecting the quality of the metal shell, and the sprayed water can enter the water storage chamber 14 through the water outlet 12 and the opening 11, thereby achieving the purpose of water recycling and reducing the cost of use.

As a further solution of the present invention, the support assembly 4 includes a slide 401, which is slidably connected in the cooling box 1, and the top of the slide 401 is connected to the fixed mold base 2. Multi-stage electric hydraulic rods 404 are fixed at the four corners of the bottom of the slide 401, and the bottom end of the multi-stage electric hydraulic rod 404 is fixed to the bottom of the water tank 10. A through hole 402 and a plurality of drainage holes 403 are opened on the slide 401.

During operation, the multi-stage electric hydraulic rod 404 can drive the slide 401 to slide in the cooling box 1, thereby facilitating the adjustment of the positions of the fixed mold base 2 and the movable mold base 3. The setting of the perforation 402 allows the heat in the fixed mold base 2 to be dissipated from the bottom, and the setting of the drainage hole 403 allows the sprayed water to be discharged from the cooling box 1, so that the water storage chamber 14 can collect the water in a centralized manner.

As a further solution of the present invention, the injection molding component 6 includes a pouring seat 601, and a chuck 602 is clamped on the outside of the pouring seat 601. Three bolts 603 are provided on the chuck 602, and the chuck 602 is installed on the movable mold base 3 through the bolts 603. A pouring hole 604 is opened in the middle of the pouring seat 601, and a slide 606 and two sliding holes 605 are provided outside the pouring hole 604. The slide 606 is annular in design, and the sealing component 9 is slidably connected in the two sliding holes 605.

During operation, the slide 606 can limit the extrusion component 7 to prevent the extrusion component 7 from shifting its position so that the discharge port of the injection molding machine is difficult to align with the pouring hole 604. The slide hole 605 can limit the blocking component 9 to improve the stability of the movement of the blocking component 9.

As a further solution of the present invention, the extrusion assembly 7 includes a pressing plate 702, three connecting plates 701 are fixed on the pressing plate 702, a sliding rod 705 is fixed to the bottom of the connecting plate 701, the sliding rod 705 is slidably connected in the limiting groove 8, a connecting tube 703 is clamped in the middle of the pressing plate 702, four springs 704 are fixed to the bottom of the pressing plate 702, and the bottom ends of the four springs 704 are fixed to the injection molding assembly 6.

During operation, the pressure plate 702 can drive the sealing component 9 to move during the movement, which is convenient for adjusting the position of the sealing component 9 outside the movable mold base 3. The pressure plate 702 is supported by the elastic force of the spring 704, so that the pressure plate 702 drives the sealing component 9 to move upward, which is convenient for sealing the pouring hole 604.

As a further solution of the present invention, the blocking component 9 includes an isolation seat 901, the top of the isolation seat 901 is an inverted cone design, the bottom of the isolation seat 901 is provided with an arc groove 902, the top of the isolation seat 901 overlaps the bottom end of the injection molding component 6, and the two sides of the top of the isolation seat 901 are respectively fixedly connected with guide rods 903, and the top ends of the two guide rods 903 pass through the injection molding component 6 and are fixed to the bottom of the extrusion component 7.

During operation, the isolation seat 901 can be embedded in the pouring hole 604 after moving up, so that the top of the mold cavity 5 is flush with the bottom of the isolation seat 901 and is in the same plane, and the surface of the injection molded part at the fracture is smooth, preventing gate residue from forming on the surface of the injection molded part.

As a further solution of the present invention, the spray assembly 13 includes a cooling circulation pump 131, which is installed in the water storage chamber 14. The two water outlet ends of the cooling circulation pump 131 are respectively connected to water pipes 132. The other end of the water pipe 132 passes through the water tank 10 and is connected to a nozzle 133. The nozzle 133 is clamped in the mounting hole 17. A plurality of nozzles 134 are provided on one side of the nozzle 133 close to the fixed mold base 2 and the movable mold base 3.

When working, the cooling circulation pump 131 draws water from the water storage chamber 14, and the cooling water passes through the water pipe 132 and the nozzle 133 and is sprayed out from the nozzle 134, and the water is sprayed toward the fixed mold base 2 and the movable mold base 3, so that both sides of the fixed mold base 2 and the movable mold base 3 can be cooled synchronously.

As a further solution of the present invention, the heat exhaust component 15 includes a support frame 151, a through hole 152 is opened in the middle of the support frame 151, three heat exhaust fans 153 are respectively installed on both sides of the top of the support frame 151, and the heat exhaust fans 153 are inclined toward the fixed mold base 2 and the movable mold base 3.

During operation, the heat exhaust fan 153 arranged obliquely toward the fixed mold base 2 and the movable mold base 3 can generate wind that can blow toward the heat sink 16, the fixed mold base 2 and the movable mold base 3, thereby improving the cooling effect.

As a further solution of the present invention, a plurality of exhaust holes 18 are provided below the mounting hole 17 , and the exhaust holes 18 are opened on one side of the cooling box 1 , and a plurality of heat sinks 16 are respectively installed on both sides of the fixed mold base 2 and the movable mold base 3 .

During operation, hot air will be discharged from the exhaust holes 18 , and the heat in the fixed mold base 2 and the movable mold base 3 can be introduced into the heat sink 16 to expand the heat dissipation area, thereby improving the heat dissipation effect of the fixed mold base 2 and the movable mold base 3 .

The working principle of the present invention is as follows: by controlling the extension of four multi-stage electric hydraulic rods 404 and driving the slide 401 to move upward, the slide 401 drives the fixed mold base 2 and the movable mold base 3 to move upward, so that the fixed mold base 2 and the movable mold base 3 are moved out of the cooling box 1, the powdered metal is mixed with the thermoplastic plastic binder material, and the mixture is processed into a melt by an injection molding machine. The injection molding machine pours the injection molding melt from the pouring hole 604 in the pouring seat 601, and the injection molding machine moves downward and squeezes the four connecting plates 701, so that the connecting plates 701 drive the two guide rods 9 through the pressing plate 702. 03 moves downward, and the two guide rods 903 drive the isolation seat 901 to move downward and detach from the bottom end of the pouring seat 601, so that the mold cavity 5 in the movable mold seat 3 is connected with the pouring hole 604 in the pouring seat 601, and the melt enters the mold cavity 5, so that the fixed mold seat 2 and the movable mold seat 3 can shape the melt. After the pouring work is completed, the injection molding machine detaches from the pouring hole 604 and the connecting plate 701, and supports the pressing plate 702 through the elastic force of the spring 704, so that the pressing plate 702 drives the isolation seat 901 to move upward through the two guide rods 903 and embeds into the pouring hole 6 04, the pouring hole 604 can be blocked, so that the melt in the mold cavity 5 can be automatically separated from the melt in the pouring hole 604 by breaking. When the fixed mold base 2 and the movable mold base 3 are cooled, the four multi-stage electric hydraulic rods 404 are controlled to contract, so that the fixed mold base 2 and the movable mold base 3 are driven to move downward through the slide 401, so that the fixed mold base 2 and the movable mold base 3 are transferred to the cooling box 1, and the cooling circulation pump 131 draws water from the water storage chamber 14, and the cooling water enters the nozzle 133 through the two water pipes 132, and the water in the nozzle 133 is discharged through multiple nozzles. The nozzle 134 sprays toward the fixed mold base 2 and the movable mold base 3, so that both sides of the fixed mold base 2 and the movable mold base 3 can be cooled and cooled simultaneously, and the heat in the fixed mold base 2 and the movable mold base 3 can be introduced into the heat sink 16 to accelerate the heat dissipation. Secondly, water can enter the water storage chamber 14 from the drainage hole 403 on the slide 401, so as to achieve the purpose of recycling water. At the same time, the heat exhaust fan 153 is controlled to work, and the wind blowing toward the heat sink 16, the fixed mold base 2 and the movable mold base 3 can quickly take away the heat, and the hot air is discharged from the exhaust holes 18 on both sides of the cooling box 1.

Claims (9)

1. The utility model provides a metal casing injection molding device, includes cooler bin (1), its characterized in that: the cooling box is characterized in that a fixed die holder (2) is arranged in the cooling box (1), a movable die holder (3) is arranged on the fixed die holder (2), a supporting component (4) is arranged at the bottom of the fixed die holder (2), the supporting component (4) is arranged in the cooling box (1), a die cavity (5) is arranged at the bottom of the movable die holder (3), an injection molding component (6) is arranged at the center of the movable die holder (3) corresponding to the die cavity (5), an extrusion component (7) is arranged in the injection molding component (6), a plugging component (9) is fixedly connected to the bottom of the extrusion component (7), the plugging component (9) is positioned at the bottom end of the injection molding component (6), and limit grooves (8) are respectively formed in two sides of the top of the movable die holder (3);

The end sliding connection of extrusion subassembly (7) is in spacing groove (8), water tank (10) have been installed to the bottom of cooling tank (1), the bottom of supporting component (4) runs through cooling tank (1) and fixes the bottom in water tank (10), opening (11) have been seted up at the top of water tank (10), apopore (12) have been seted up to the bottom of cooling tank (1), apopore (12) and opening (11) intercommunication, be equipped with reservoir chamber (14) in water tank (10), install spray subassembly (13) in reservoir chamber (14), spray subassembly (13) both ends run through water tank (10) and install the both sides at cooling tank (1), exhaust heat subassembly (15) are installed to the top of cooling tank (1) inner wall, mounting hole (17) have been seted up respectively to the both sides of cooling tank (1), spray subassembly (13) top is installed in mounting hole (17).

2. The metal shell injection molding apparatus of claim 1, wherein: the support assembly (4) comprises a sliding seat (401), the sliding seat (401) is slidably connected in the cooling box (1), the top of the sliding seat (401) is connected with the fixed die seat (2), multistage electric hydraulic rods (404) are respectively fixed at four corners of the bottom of the sliding seat (401), the bottom of each multistage electric hydraulic rod (404) is fixed at the bottom of the water tank (10), and a perforation (402) and a plurality of drainage holes (403) are formed in the sliding seat (401).

3. The metal shell injection molding apparatus of claim 1, wherein: the injection molding assembly (6) comprises a pouring seat (601), a chuck (602) is clamped outside the pouring seat (601), three bolts (603) are arranged on the chuck (602), and the chuck (602) is installed on the movable die holder (3) through the bolts (603).

4. A metal casing injection molding apparatus according to claim 3, wherein: the middle part of pouring seat (601) has seted up pouring hole (604), pouring hole (604) are equipped with slide (606) and two slide holes (605) outward, slide (606) are annular design, shutoff subassembly (9) sliding connection is in two slide holes (605).

5. The metal shell injection molding apparatus of claim 1, wherein: the extrusion assembly (7) comprises a pressing plate (702), three connecting plates (701) are fixed on the pressing plate (702), sliding rods (705) are fixed at the bottoms of the connecting plates (701), the sliding rods (705) are slidably connected in limiting grooves (8), connecting cylinders (703) are clamped in the middle of the pressing plate (702), four springs (704) are fixed at the bottoms of the pressing plate (702), and the bottoms of the four springs (704) are fixed on an injection molding assembly (6).

6. The metal shell injection molding apparatus of claim 1, wherein: the plugging assembly (9) comprises an isolation seat (901), the top of the isolation seat (901) is of an inverted cone design, an arc groove (902) is formed in the bottom of the isolation seat (901), the top of the isolation seat (901) is overlapped with the bottom end of the injection molding assembly (6), guide rods (903) are fixedly connected to two sides of the top of the isolation seat (901) respectively, and the top ends of the two guide rods (903) penetrate through the injection molding assembly (6) and are fixed with the bottom of the extrusion assembly (7).

7. The metal shell injection molding apparatus of claim 1, wherein: spray subassembly (13) are including cooling circulation pump (131), cooling circulation pump (131) are installed in reservoir (14), two water outlet ends of cooling circulation pump (131) are connected with aqueduct (132) respectively, the other end of aqueduct (132) runs through water tank (10) and is connected with spray tube (133), spray tube (133) joint is in mounting hole (17), one side that spray tube (133) is close to die holder (2) and movable mould base (3) is equipped with a plurality of nozzle (134).

8. The metal shell injection molding apparatus of claim 1, wherein: the heat extraction assembly (15) comprises a support frame (151), a through hole (152) is formed in the middle of the support frame (151), three heat extraction fans (153) are respectively arranged on two sides of the top of the support frame (151), and the heat extraction fans (153) incline towards the fixed die holder (2) and the movable die holder (3).

9. The metal shell injection molding apparatus of claim 1, wherein: the cooling device is characterized in that a plurality of exhaust holes (18) are formed below the mounting holes (17), the exhaust holes (18) are formed in one side of the cooling box (1), and a plurality of cooling fins (16) are respectively mounted on two sides of the fixed die seat (2) and the movable die seat (3).